But there also are some basic truths about human vision.

We only see three "simplified" different colors, red, blue and green, and other nuances are interpolations our brains make. There is infinitely more frequency information in light that we just don't pick up.

So I would expect that the primary colors red/blue/green, which are grounded in human physiology, were universally recognized across languages. To the extent they're not, that's confusing.